libexec/ypxfr/ypxfr_getmap.c

   1 /*
   2  * Copyright (c) 1995
   3  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Bill Paul.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/libexec/ypxfr/ypxfr_getmap.c,v 1.7.2.2 2002/02/15 00:46:54 des Exp $
  33  */
  34
  35 #include <stdio.h>
  36 #include <time.h>
  37 #include <sys/types.h>
  38 #include <rpc/rpc.h>
  39 #include <rpc/xdr.h>
  40 #include <rpcsvc/yp.h>
  41 #include "ypxfr_extern.h"
  42
  43 extern bool_t xdr_ypresp_all_seq(XDR *, unsigned long *);
  44
  45 int (*ypresp_allfn)(int, char *, int, char *, int, char *);
  46 void *ypresp_data;
  47 extern enum ypstat yp_errno;
  48
  49 /*
  50  * This is largely the same as yp_all() except we do the transfer
  51  * from a specific server without the aid of ypbind(8). We need to
  52  * be able to specify the source host explicitly since ypxfr may
  53  * only transfer maps from the NIS master server for any given domain.
  54  * However, if we use the libc version of yp_all(), we could end up
  55  * talking to one of the slaves instead. We do need to dig into libc
  56  * a little though, since it contains the magic XDR function we need.
  57  */
  58 int
  59 ypxfr_get_map(char *map, char *domain, char *host,
  60     int (*callback)(int, char *, int, char *, int, char *))
  61 {
  62         CLIENT *clnt;
  63         ypreq_nokey req;
  64         unsigned long status;
  65         struct timeval timeout;
  66
  67         timeout.tv_usec = 0;
  68         timeout.tv_sec = 10;
  69
  70         /* YPPROC_ALL is a TCP service */
  71         if ((clnt = clnt_create(host, YPPROG, YPVERS, "tcp")) == NULL) {
  72                 yp_error("%s", clnt_spcreateerror("failed to \
  73 create tcp handle"));
  74                 yp_errno = YPXFR_YPERR;
  75                 return(1);
  76         }
  77
  78         req.domain = domain;
  79         req.map = map;
  80         ypresp_allfn = callback;
  81         ypresp_data = NULL;
  82
  83         (void)clnt_call(clnt, YPPROC_ALL, (xdrproc_t)xdr_ypreq_nokey, &req,
  84             (xdrproc_t)xdr_ypresp_all_seq, &status, timeout);
  85
  86         clnt_destroy(clnt);
  87
  88         if (status == YP_NOMORE)
  89                 return(0);
  90
  91         if (status != YP_TRUE) {
  92                 yp_errno = YPXFR_YPERR;
  93                 return(1);
  94         }
  95
  96         return(0);
  97 }